1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ffb7d7f2c8442874af9c1089faf42ac1975f633079c5860297de51588d0b34. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1270320f-2d54-4f05-888b-ae62a26507cb.json and https://artists.proofprofile.net/proofs/artist/1270320f-2d54-4f05-888b-ae62a26507cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a41000cc82b666632213f53162c358ce427fb5c333965f6e250fb3f2d5cd3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50095708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591b0c8aefdf397ac7dca846e1691760d3af1a8823e82d26b75195dc56002344. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50099114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7835f1c46ae46a55c54ba3e7d58fc4355c0b469ee776b21a0cc7b6d0192cba3b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50099113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5337f9bdf1472af8451c510c138a8a7ae1b4df905cb236f352c4ab9d968675e2. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50099118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e41e72df36eff48aa20bef347641d1a9a692e70cde03089bdda63faf7f50cc. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50099119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1808f5cfc93f71f4aabb59cfc63eb0eba274a17d6235d12f2614b92c7af6fd3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50097428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da06f779a5777ffe52e63e1ca9b118deb893c000a3587d42bae24c047c17081. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50099108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf726cee9606984e739315d72df08103d5346a6d16ca1d07e93f12e1afb0bbd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50100771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8660dc394dbf6d16c0ec4e08fdd6f21a692fc89ba68bdf602c61e5fcaa22cd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50103483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aecfd01c99feee703827f65f79069c0e8e17707d59a2d4e1cbd8f0110969a9c. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50108755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605123b8042d61451b1ae273edd19e3dd7f83e745ddb00f3f3c61f66984bd764. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ae2aea82fbd3a06224a36b2f6a5ac02fb8cbca033e4f182d65384b475a79e4. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75c10536be4444f0d6af0a9908ddd7f014bfb08c99e0ed650bf5c3ef11a3b03. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ebfb9516e9f38bf28f262fd95ef7c6c15e2a596201796dc5ca3f5d8d453b7c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:39:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cea120ae1f268db3c29ebab9a468b8df1f06f3342c902c77b7ac9c7a4662694. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb13aee95f73a65b65a737fc0e2e782bc264ca898551158817a6854af651e90b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:41:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa013f36516849e38745d610089b228fdae08929f97c7759c260847c938cee79. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb4f6753b92650507d8467d468bd07fc4e156f9f05749a60a86ffd3755fd3f5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:57:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4186a514cafcfbab7684f1b60320dafd51b754b7b46ab2c364ce8e051f6a2fa. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15db0c25f37f2fb6ac26a4278ed4e291ce8a5c48e1483a9ffb5db7b81173d768. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbc3f74f02d189bda5fe6c14605a3112704b753bd0573e1c4b74dd3a2407922. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0651815f2e85b4d6a6cccbd9860e38ff9fbd9b05d72226a5699c08469ea3eb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ceae7995a571479c969b909675697fdd0896480ea0c898c4c5939068486271. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0547e394e8ff3ff98c53b36fee87f7e8b057aafb9bce40574d681e9daf9b411. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb20be5aed9b9754f728e33c9a4da137991324eff658c9aead9e7432a42faf05. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdea86f08fb682cec436bcb008b72e618ddd06bfc26480e984791bf979f5790d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fef2b6c349312b945387c8f57e78a23d705278b6148dddbfcd032b317460cfa. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf29a89e2f626716262fe5f84cf8e2f066c4f1a00927ab7915067095b6512ea. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR0Z50127677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3dfa52eb71b1f2f99b2f0f4cf758a4da5aa9b87f3344f7549d6a4012cfc176. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CI2DY2400126.